Alice Li What Killed The Dinosaurs Blog

What I find most surprising about this article is the numerous explanations for the extinction of dinosaurs. There is this one popular theory that the dinosaurs are killed off by asteroids, and there is evidence to support that. For example, there is the discovery of iridium that is found in asteroids and the hidden crater. These are concrete evidence to support the theory, but then scientists suggested this other theory that got me thinking. Can asteroids actually kill off an entire species of animals in one shot? This is when I start thinking that the second argument is reasonable. It is possible for dinosaurs to die off during the "darkness" period when no light shone for two years, and the temperature dropped to an unacceptable degree. It is possible in this case for dinosaurs to slowly die off because they are not well-adapted to this new environment. This is the case for many animals today too. For example, if penguins were suddenly placed in a hot environment, then they will fail to survive too. Therefore, I believe that the asteroid and the darkness theory can be combined to accurately interpret the extinction of dinosaurs.